diff --git a/renderutil/Makefile.am b/renderutil/Makefile.am
index 3bff67a0daee9705d51f2f5c984d99e5dd7d7fce..5e5c59b30083534708ee7d57c8463bf7821c7d5e 100644
--- a/renderutil/Makefile.am
+++ b/renderutil/Makefile.am
@@ -5,8 +5,8 @@ lib_LTLIBRARIES = libxcb-render-util.la
 
 xcbinclude_HEADERS = xcb_renderutil.h
 
+AM_CPPFLAGS = $(XCB_CFLAGS) $(XCB_RENDER_CFLAGS)
 libxcb_render_util_la_SOURCES = cache.c util.c glyph.c
-libxcb_render_util_la_CPPFLAGS = $(XCB_CFLAGS) $(XCB_RENDER_CFLAGS)
 libxcb_render_util_la_LIBADD = $(XCB_LIBS) $(XCB_RENDER_LIBS)
 libxcb_render_util_la_LDFLAGS = -no-undefined